Spark Plugs for 318

[Fred]

May be subjective, but what is a good plug and wires for a 71 318 bored .30, 70 340 4bbl intake, Holley 600, very mild grind on stock cam, and stock electronic points?

It currently has Split Fire SF6E from 20 years ago. 

[cudabob496]

I use 8mm MSD wires, and NGK plugs

[Fred]

Thanks cudabob!

[aris_unlimited]

I too just put NGK plugs in mine. Hoping they'll last longer than the Champions I had in before them. Those champions were massively fouled up with heavy deposits on them after less than 5k miles.

[cudabob496]

I too just put NGK plugs in mine. Hopi g they'll last longer than the Champions I had in before them. Those champions were massively fouled up with heavy deposits on them after less than 5k miles.

oil leakage or running rich?  bad power valve?

[Chryco Psycho]

I would use RN12YC  Champs , in my experience the NGK will foul far faster than the Champion is everyhting is right

[aris_unlimited]

oil leakage or running rich?  bad power valve?

Does have a small oil leak, but it's external and doesn't even lose a quart between 3k mile oil changes. Not sure what you mean about power valve, unless you're referring head valves. But they'd have to be bad on every cylinder, because all the spark plugs looked bad.

[Fred]

Thanks CP.  To be clear, you are suggesting this as an option for my engine I mentioned above?

[brasil]

Autolite 65  in my 340 cui

Autolite 85 in the BBs

Greetings Juergen

[cudabob496]

https://www.youtube.com/watch?v=WfjkeC3dPSI

https://www.youtube.com/watch?v=5_lgTTkXJDM

[aris_unlimited]

https://www.youtube.com/watch?6v=WfjkeC3dPSI

Is that a problem only on holleys? I still use the original 2 barrel carburetor. Pretry sure it's a carter if I'm remembering correctly.

https://www.youtube.com/watch?v=5_lgTTkXJDM

[cudabob496]

sorry, don't know

https://www.youtube.com/watch?v=uTaT0O8sUD0

[Chryco Psycho]

Thanks CP.  To be clear, you are suggesting this as an option for my engine I mentioned above?

Yes

[Fred]

Thanks!